Matrix with integral rollers for forming tested
(57) Abstract:The invention relates to a pressure treatment of metals, in particular, to methods for producing an axisymmetric products with stepped side surface. The device includes a punch mounted for rotation and axial movement relative to the workpiece, a stop mounted coaxially with the punch and with the possibility of rotation, and the roller matrix consisting of rollers arranged parallel to the axis of the workpiece, with the possibility of radial movement relative to the axis of the material and consisting of disks mounted on a common axis, fixed in the housing, and each disc is installed with the possibility of independent rotation relative to the other disks. The invention improves the quality of the products due to the fact that when running each drive composite roller rotates at its own angular velocity regardless of the speed of rotation of the other drive roller and thereby eliminates slippage drive roller relative to the side surface of the workpiece. 1 Il. The invention relates to the processing metrov pressure and can be used for stamping axisymmetric products from stupenda the coy, containing stepped in contact with the workpiece, the roller having a number of stages equal to the number of stages of the manufactured products and capable of radial movement planted on the axis and fixed in the housing parallel to the axis of rotation of the workpiece, each roller is made of a composite in the form of typesetting disks mounted on a common axis [SU, 1449210 A1 07.01.89].The disadvantage of this device is to reduce the surface quality of the products obtained as a result of slippage of the rollers relative to the side surface of the workpiece due to the disparities circular velocity of the contacting surfaces of the workpiece and the rollers.The claimed invention solves the problem of improving the quality of manufactured axisymmetric manual products by eliminating slippage of the rollers relative to the side surface of the workpiece.This is achieved by the fact that the matrix with integral rollers for stamping phase containing stepped in contact with the workpiece, the roller having a number of stages equal to the number of stages of the manufactured products, and capable of radial movement planted on the axis and fixed in the housing parallel the rich, each drive roller has independent rotation relative to the other disks.The invention is illustrated in the drawing.The device comprises a plug 1 is mounted for rotation and axial movement relative to the workpiece 2, focus 3, mounted coaxially with the punch 1 and capable of rotation, and the roller matrix consisting of rollers 4 arranged parallel to the axis of the workpiece, with the possibility of radial movement relative to the axis of the workpiece and consisting of the disks 5, mounted on a common axis, fixed in the housing 6, and each disc is installed with the possibility of independent rotation relative to the other disks.The device operates as follows.The workpiece 2 is set to the stop 3. Subsequent summing the punch 1 install rollers 4 by radial movement before contact with the workpiece 2. Then include the rotational drive of the stop 3 and the punch 1, and the emphasis and punch rotate the same angular velocity1. The workpiece 2 starts to rotate due to contact friction forces arising between the surface of the workpiece and the working surfaces of the stop 3 and the punch 1. Simultaneously with the start of a drive to start the deformation of the workpiece 2 by means of axial force P applied the MD drives the rollers are rotated due to the contact friction forces arising between the side surfaces of the disks and the side surface of the workpiece with its own angular velocities 2,3,4... . Upon reaching the specified dimensions stop flow plug 1, and then assign the rollers 4 and remove the item.The drive to move the rollers can be used any known mechanism - hydraulic, mechanical and otherBecause the drives rollers rotate independently from each other, eliminates slippage drive roller relative to the side surface of the workpiece.The proposed device will allow to obtain products of higher quality compared to the base object in which the selected prototype. Matrix with integral rollers for stamping phase containing stepped in contact with the workpiece, the roller having a number of stages equal to the number of stages of the manufactured products, and capable of radial movement planted on the axis and fixed in the housing parallel to the axis of rotation of the workpiece, each roller is made of a composite in the form of typesetting disks mounted on a common axis, wherein each drive roller has in the
FIELD: plastic working of metals, namely manufacture of cans.
SUBSTANCE: apparatus includes roller unit having pair of remolding rollers and two pairs of outer reprofiling rollers. Deflection unit is made with possibility of engaging with reprofiling rollers that have contact with lower portion of can. Outer reprofiling rollers engage with outer surface of lower portion of can. Inner and outer profiles of can are formed by means of pair of reprofiling rollers at static position of can body and at rotation of the whole apparatus.
EFFECT: improved efficiency of can manufacture, enhanced quality of cans.
31 cl, 14 dwg
FIELD: machine building.
SUBSTANCE: at least two metal plates are connected with plate surfaces levelling. The metal plates are rotated using the rotating shaft, located perpendicular to surfaces of the metal plates. Force is applied at the connection place at periphery of at least two metal plates. The force is applied to at least one of metal plates to form the cylinder along the rotating shaft. One fragment of second metal plate located in the center is splitted. Second metal alloy on the surface of the first metal cylinder along the rotating shaft is formed by means of the force applied to the second splitted metal plate.
EFFECT: simplified manufacturing of cylindrical part, having varying plate thickness and unbalanced weight.
6 cl, 11 dwg
FIELD: machine building.
SUBSTANCE: incremental formation of the element on the part is performed using the first and the second forming tools located at the opposite sides of the part. The element is formed by the said tools movement over the part surface. Then distance between the forming tools is reduced, and re-forming is performed of at least part of the formed element by movement of the forming tools over the part surfaces.
EFFECT: increased geometric accuracy of the part.
7 cl, 11 dwg
FIELD: metal working.
SUBSTANCE: hard alloy matrix has casing, bushing pressed in the case and hard alloy insertion. Bushing has multifaced hole. Hard alloy insertion is composed by several sections made in form of trapezoidal-section prisms which have cut angles at their non-working edges. Number of sections corresponds to number of faces of item to be headed. Cuts of angles are made symmetrically to faces of working edge. Slits are made in several places of multifaced hole bushing at the ponts where faces cross each other.
EFFECT: improved resistance of matrix; simplified assembly.
3 cl, 1 dwg
FIELD: forging and forming processes and equipment, namely manufacture of elongated forgings with thickened portions and lateral branches.
SUBSTANCE: die set includes deforming punch, die with vertical parting, struts in the form of truncated pyramids having wedge-shaped slopes for mounting die; units for securing struts to supporting plate. Die is placed in struts with possibility of motion relative to them. Struts have double-sided mutually opposite slopes. Elastic member is placed under die. Maximum compression value of said elastic member by means of effort corresponding to effort of clamping die halves in struts is equal to value of descending die at forging process.
EFFECT: enhanced reliability and rigidity of die set.
2 cl, 1 dwg, 1 ex
FIELD: plastic working of metals, possibly operations for finish working of forgings of double-end box nut wrenches.
SUBSTANCE: die set includes upper and lower plates with guiding columns, punch for punching operation mounted on upper plate, stripper, lower die for punching, half-open trimming lower die and trimming punch. Trimming lower die is mounted on upper plate; it has cutting edge and cavity arranged behind collar of cutting edge and designed for freely placing forging of nut wrench. Trimming punch is mounted on lower plate and it has embracing supporting surface for fixing forging at trimming and straightening operations.
EFFECT: enhanced quality of forging.
9 dwg, 1 ex
FIELD: plastic working of metals with use of intensive plastic deformation, production of nano-crystalline materials with improved mechanical properties.
SUBSTANCE: die set includes band in which cone insert having several parts is pressed; lower support; inlet and outlet ducts; ram. According to first variant of invention contours of parts of cone insert are restricted by means of two mutually normal planes and cone surface portion cut by said planes. Crossing line of said planes does not coincide with symmetry axis of cone surface. Inlet duct is formed by faces of cone insert parts arranged normally one relative to other and mutually joined; walls of said duct are in the form of portions of said planes. According to second variant of invention contours of cone insert parts are restricted by radius surface, by two mutually crossing planes and portion of cone surface cut by said planes. Crossing planes are mutually normal or they are inclined one relative to other by angle 120°. Axis of radius surface coincides with crossing line of said planes. Faces of cone insert parts are mutually joined; inlet duct is formed by their radius surfaces and outlet duct is formed by radius grooves.
EFFECT: lowered number of parts, reduced consumption of material for making cone insert.
4 cl, 10 dwg
FIELD: plastic working of meals, possibly manufacture of hollow parts such as sleeves, tubes, bushes by cold pressing out.
SUBSTANCE: method comprises steps of plastic deforming of blank at translation and rotation of deforming tool; realizing said motions of tool from separate drive units; setting speed of translation less than that of rotation and selecting relation of said speed values less than 2.5.
EFFECT: enhanced manufacturing possibilities of method.
2 cl, 2 dwg, 2 ex
FIELD: plastic working of metals, namely processes for pressing out shapes of aluminum base alloys, constructions of pressing out tools.
SUBSTANCE: method comprises steps of making blank, heating, hot pressing out of blank through die, heat treatment of shape. At pressing out blank is subjected in upper p[art of die to additional shearing deformations due to twisting it by angle in range 40 - 50° relative to axis of die. Die includes deforming cone, working rectangular collar and outlet zone. Deforming cone has two helical protrusions in the form of trapezium. Upper base of said trapezium is equal to length of rectangle of working collar; its lower base consists 1.5 - 2 of parts of said length value. Rotation angle of upper cross section of protrusion relative to its lower cross section is in range 40 - 50° relative to axis of die. In longitudinal cross section said protrusions are in the form of parabola.
EFFECT: possibility for making rectangular aluminum alloy shapes with enhanced mechanical characteristics and low anisotropy of their properties, improved design of die.
2 cl, 4 dwg, 1 ex, 1 tbl
FIELD: plastic working of metals, possibly forging ingots and billets in hydraulic forging presses.
SUBSTANCE: apparatus includes two holders of upper and lower strikers having inclined surfaces. Said holders are kinematically coupled with two holders of lateral strikers having inclined surfaces corresponding to those of holders of upper and lower strikers. Four strikers are secured to respective holders by means of clamps and tightening studs. Each of upper and lower strikers has two working portions mutually divided by cutout. Each of lateral strikers has one working portion entering cutouts of upper and lower strikers. At least one adjusting plate is placed between holder of lower striker and lower striker. Lower striker is secured to its holder by means of two Г-shaped clamps. Inclined surfaces of said clamps are forced to inclined surfaces of holder of lower striker; riffled surfaces of said clamps are forced to two friction plates arranged on lateral surfaces of lower striker. Pins passing through openings of adjustment plates and entering openings of holder of lower striker are mounted in lower striker.
EFFECT: lowered cost of making tool, reduced time period for readjustment of it.
2 cl, 5 dwg